Grinder attachment



FIG. 1 is a perspective view of a grinder attachment showing my new design;

FIG. 2 is left side elevational view showing the design for the grinder attachment of FIG. 1;

FIG. 3 is a right side elevational view showing the design for the grinder attachment of FIG. 1;

FIG. 4 is a front elevational view showing the design for the grinder attachment of FIG. 1;

FIG. 5 is a rear elevational view showing the design for the grinder attachment of FIG. 1;

FIG. 6 is a top elevational view showing the design for the grinder attachment of FIG. 1; and,

FIG. 7 is a bottom elevational view showing the design for the grinder attachment of FIG. 1.

The broken lines in the drawings depict unclaimed environmental subject matter. 

CLAIM The ornamental design for a grinder attachment, as shown and described. 